NTC thermistors for
temperature measurement
Probe assemblies
Series/Type: B57045K
Date: March 2013
EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.Temperature measurement B57045K
Probe assemblies K45
Applications Dimensional drawing
Temperature compensation, measurement
and control (chassis mounting)
Features
Cost-effective
Good thermal coupling through screw-type
case (thread M3)
Electrically isolated aluminum case
Tinned copper leads
Options
Tighter resistance tolerance available on
request.
Delivery mode
Bulk
Dimensions in mm
Approx. weight 1 g
General technical data
Climatic category (IEC 60068-1) 55/125/56
Max. power (at 25 C) P 450 mW
25
Resistance tolerance R /R 10 %
R R
Rated temperature T 25 C
R
Dissipation factor (in air) approx. 9 mW/K
th
Dissipation factor (on chassis) approx. 20 mW/K
th
Thermal cooling time constant (in air) approx. 75 s
c
Thermal cooling time constant (on chassis) approx. 15 s
c
Torque approx. 0.5 Nm
Insulation resistance (V = 100 V DC) R > 100 M
ins
Test voltage (t = 1 s) V 2500 V AC
test
Please read Cautions and warnings and Page 2 of 11
Important notes at the end of this document.